JSFiddle - React, Tailwind, and code Playground

by birdie2019

HTML

<div class="container">
    <h1>待辦事項</h1>
    <div id="input-panel">
      <input type="text" id="input" placeholder="請輸入待辦事項...">
      <select id="event-cat" onchange="changeColor()">
        <option value="none" selected disabled hidden>事項分類</option>
        <option value="normal">一般</option>
        <option value="important">重要</option>
        <option value="urgent">緊急</option>
      </select>
      <button class="add-btn" onclick="add()" >+</button>
    </div>
    
  </div>
  <div class="container">
    <ul id="list">
    </ul>
    <button id="export-btn">匯出</button>
  </div>

CSS

* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    font-size: 10px;
    color: #606060;
  }
  
  body {
    background-color: #FFF0DF;
  }
  
  .container {
    width: 500px;
    margin: 30px auto;
  }
  
  /* input-panel */
  h1 {
    text-align: center;
    font-size: 2.4rem;
    letter-spacing: 3px;
    
  }
  
  #input-panel {
    display: flex;
    justify-content: center;
    margin: 10px 0;
  }
  
  #input-panel > input {
    flex: 1;
    padding: 10px 8px;
    border-radius: 5px 0 0 5px;
    border: 0;
    outline: 0;
    font-size: 1.5rem;
    letter-spacing: 1px;
  }
  
  .text-normal {
    color: #6B8F71;
  }
  .text-important {
    color: #F49344;
  }
  .text-urgent {
    color: #BF1802;
  }
  
  #event-cat {
    border: 0;
    border-left: 3px solid #fffaf5;
    width: 100px;
    font-size: 1.5rem;
    letter-spacing: 1px;
    outline: 0;
    text-align: center;
  }
  
  .add-btn {
    border: 0;
    width: 40px;
    border-radius: 0 5px 5px 0;
    font-size: 1.8rem;
    font-weight: 700;
    cursor: pointer;
    background-color: #546A76;
    color: #fff;
  }
  
  /* list */
  
  #list > li {
    display: flex;
    justify-content: flex-end;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 10px 8px;
    margin-bottom: 8px;
    border-radius: 5px;
  }
  
  #list > li :first-child {
    flex: 1;
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 1px;
  }
  #list > li :nth-child(2) {
    width: 100px;
    font-size: 1.3rem;
    text-decoration: underline;
    vertical-align: center;
    letter-spacing: 1px;
    color: #a6a6a6;
  }
  
  #list > li :last-child {
    background-color: transparent;
    color: #a6a6a6;
    border: 0;
    cursor: pointer;
    font-weight: 700;
    transition: all 0.3s; 
  }
  
  #list > li :last-child:hover {
    color: #FA829C;
    transform: scale(1.1);
  }

  #list > li :nth-last-child(2) {
    background-color: transparent;
    color:...

JavaScript

function add() {
    var input = document.getElementById('input');
    var list = document.getElementById('list');
    var li = document.createElement('li');
    var span = document.createElement('span');
    var div = document.createElement('div');
    var deleteBtn = document.createElement('button');
    var finishBtn = document.createElement('button');
    var eventCat = document.getElementById('event-cat');
    var eventCatIndex = eventCat.selectedIndex;
    var eventValue = eventCat.options[eventCatIndex].value;
    var inputValue = input.value;
    if (eventValue != 'none' && inputValue != '') {
        list.append(li);
        li.append(span);
        span.className = eventValue;
        li.append(div);
        div.style.display = 'none';
        div.className = 'show-finish';
        div.textContent = '(已完成)'
        li.append(finishBtn);
        finishBtn.textContent = '[ 標示為已完成 ]';
        finishBtn.onclick = finishState;
        li.append(deleteBtn);
        deleteBtn.textContent = '[ 刪除 ]';
        deleteBtn.onclick = deleteLi;
        span.textContent = inputValue;
        input.value = '';
        eventCat.value = 'none';
        input.className = '';
    } else {
        alert('請填寫待辦事項和事件分類');
    }
  }
  
  function finishState () {
    var e = event.target;
    var showFinish = e.parentElement.children[1];
    console.log(showFinish);
    if (e.textContent == '[ 標示為未完成 ]') {
        e.textContent = '[ 標示為已完成 ]';
        showFinish.style.display = 'none';
    } else {
        e.textContent = '[ 標示為未完成 ]';
        showFinish.style.display = 'block';
    }
  }

  function deleteLi() {
      var yes = confirm('確定要刪除嗎？');
    if (yes) {
        event.target.parentElement.remove();
    }
  }
  
  var exportBtn = document.getElementById('export-btn');
  exportBtn.onclick = exportList;
  
  function exportList() {
    var list = document.getElementById('list').children;
    var text = ''; 
    var num = 1;
    for (var item of list) {
    var...